<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			html, body{
				height: 100%;
				overflow: hidden;
				margin: 0;
			}
			
/* 			.left {
				height: 100%;
				margin-right: 300px;
				background-color: green;
			}
			
			.right {
				position: absolute;
				top: 0;
				right: 0;
				width: 300px;
				height: 100%;
				background-color: orange;
			} */
			
			/* 左边300 */
			.left {
				position: absolute;
				top: 0;
				left: 0;
				width: 200px;
				height: 100%;
				background-color: green;
			}
			
			.right{
				height: 100%;
				margin-left: 200px;
				background-color: orange;
			}
		</style>
	</head>
	<body>
		<div class="left"></div>
		<div class="right"></div>
	</body>
</html>
